Samsung C&T has announced that it has completed work on the combined cycle power plant being built as part of the second phase expansion of the Emirates Aluminium (Emal) complex.

The $4.5bn Phase II expansion being undertaken at Emal's plant at Khalifa Industrial Zone (Kizad) will see the plant's capacity almost double to product 1.3m metric tonnes. The work, which was due to complet at the end of 2014, involves the introduction of the longest single potline in the world at 1.7km.

Samsung C&T's work involved increasing the capacity of its plant on site from 2,000MW to 3,100MW.

In a regulatory filing, the company said that it had "received certificate of substantial completion" for the plant's construction from EMAL on 19 February, 2015.

Contract terms had been amended as the project, which started on site in September 2011, was originally due to complete within three years by September 2014. The contract amount also increased from an initial $587m to just over $625m.

At its peak, more than 2,500 workers were on the site and the company achieved 10 million man-hours without a lost time incident during the project.